With IPHost Network Monitor you can run simple snmp requests against a IBM device in your network.
l2tHistTunnelType
l2t History Tunnel Type
1.3.6.1.4.1.2.6.119.4.7.5.1.1.10
The type of Layer-2 Tunnel. Possible values are 1 = Layer-2 Tunnel Protocol Tunnel, 2 = Layer-2 Forwarding Tunnel, 3 = Point-to-Point Tunnel Protocol Tunnel.
Back to ibm-ibml2tp MIB page.
IPHost Network monitor allows you to monitor l2tHistTunnelType on IBM device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring IBM computers right now.